Dysfunction Exam with Questions and
Correct Answers Latest 2025
The nurse is conducting a staff in-service on renal ultrasounds. Which
statement describes this diagnostic test?
a. Computed tomography uses external radiation to visualize the renal system.
b. Visualization of the renal system is accomplished without exposure to
radiation or radioactive isotopes.
c. Contrast medium and x-rays allow for visualization of the renal system.
d. External radiation for x-ray films is used to visualize the renal system, before,
during, and after voiding. - CORRECT ANSWERS a. Computed tomography
uses external radiation to visualize the renal system.
A renal ultrasound transmits ultrasonic waves through the renal parenchyma
allowing for visualization of the renal system without exposure to external
beam radiation or radioactive isotopes. Computed tomography uses external
radiation and sometimes contrast media to visualize the renal system. An
intravenous pyelogram uses contrast medium and external radiation for x-ray
films. The voiding cystourethrogram visualizes the renal system with injection
of a contrast media into the bladder through the urethral opening and use of x-
ray before, during, and after voiding.
The nurse is admitting a school-age child in acute renal failure with reduced
glomerular filtration rate. Which urine test is the most useful clinical indication
of glomerular filtration rate?
a. pH
b. Osmolality
c. Creatinine
d. Protein level - CORRECT ANSWERS c. Creatinine
The most useful clinical indication of glomerular filtration is the clearance of
creatinine. It is a substance that is freely filtered by the glomerulus and secreted
by the renal tubule cells. The pH and osmolality are not estimates of glomerular
filtration. Although protein in the urine demonstrates abnormal glomerular
permeability, it is not a measure of filtration rate.
The nurse is conducting an assessment on a school-age child with urosepsis.
Which assessment finding should the nurse expect?
a. Fever with a positive blood culture
, b. Proteinuria and edema
c. Oliguria and hypertension
d. Anemia and thrombocytopenia - CORRECT ANSWERS a. Fever with a
positive blood culture
Symptoms of urosepsis include a febrile UTI coexisting with systemic signs of
bacterial illness; blood culture reveals presence of urinary pathogen.
Proteinuria and edema are symptoms of minimal change nephrotic syndrome
(MCNS). Oliguria and hypertension are symptoms of acute glomerulonephritis
(AGN). Anemia and thrombocytopenia are symptoms of hemolytic uremic
syndrome (HUS).
The nurse is teaching parents about prevention of urinary tract infections in
children. Which factor predisposes the urinary tract to infection?
a. Increased fluid intake
b. Short urethra in young girls
c. Prostatic secretions in males
d. Frequent emptying of the bladder - CORRECT ANSWERS b. Short urethra in
young girls
The short urethra in females provides a ready pathway for invasion of
organisms. Increased fluid intake and frequent emptying of the bladder offer
protective measures against urinary tract infections. Prostatic secretions have
antibacterial properties that inhibit bacteria.
Which should the nurse recommend to prevent urinary tract infections in young
girls?
a. Wear cotton underpants.
b. Limit bathing as much as possible.
c. Increase fluids; decrease salt intake.
d. Cleanse perineum with water after voiding. - CORRECT ANSWERS a. Wear
cotton underpants.
Cotton underpants are preferable to nylon underpants. No evidence exists that
limiting bathing, increasing fluids/decreasing salt intake, or cleansing the
perineum with water after voiding decrease urinary tract infections in young
girls.
The nurse is admitting a newborn with hypospadias to the nursery. The nurse
expects which finding in this newborn?
a. Absence of a urethral opening is noted.
b. Penis appears shorter than usual for age.
c. The urethral opening is along the dorsal surface of the penis.
d. The urethral opening is along the ventral surface of the penis. - CORRECT
ANSWERS d. The urethral opening is along the ventral surface of the penis.